One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,9)(3,8,12,6)(4,10,14,15)(5,11,13,16)(17,18)(19,25)(20,22)(21,24)(23,27)(26,32)(28,30)(29,31)(33,34)(35,41)(36,37)(38,42)(39,48)(40,44)(43,45)(46,47)(1,3)(2,8)(4,13)(5,14)(6,9)(7,12)(10,16)(11,15)(17,19)(18,23)(20,25)(21,29)(22,27)(24,32)(26,30)(28,31)(33,35)(34,41)(36,43)(37,45)(38,48)(39,42)(40,46)(44,47) involution — undirected(2,9)(3,12)(4,14)(11,16)(18,20)(23,25)(24,28)(31,32)(33,36,40,38)(34,42,44,37)(35,43,46,48)(39,47,45,41)(1,4,7,14)(2,10,9,15)(3,13,12,5)(6,11,8,16)(17,20,22,18)(19,25,27,23)(21,24,30,28)(26,31,29,32)(33,37,40,42)(34,36,44,38)(35,45,46,39)(41,43,47,48)(1,5,7,13)(2,11,9,16)(3,4,12,14)(6,15,8,10)(17,21)(18,24)(19,26)(20,28)(22,30)(23,31)(25,32)(27,29)(33,38,40,36)(34,42,44,37)(35,43,46,48)(39,41,45,47)(1,6)(2,12)(3,9)(4,11)(5,10)(7,8)(13,15)(14,16)(17,19)(18,23)(20,25)(21,29)(22,27)(24,32)(26,30)(28,31)(33,39,40,45)(34,43,44,48)(35,42,46,37)(36,47,38,41)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.